tremulous

1. ADJ If someone's voice, smile, or actions are tremulous, they are unsteady because the person is uncertain, afraid, or upset. 震颤的[文学性] [ADV with v]

She fidgeted in her chair as she took a deep, tremulous breath. 她在椅子上坐立不安，轻颤着深吸了一口气。

2. tremulouslyADV

"He was so good to me," she said tremulously. “他对我非常好，”她战栗地说。